Frank did this the other day. Example:
- Several policemen do something bad.
- A poster says, "The police doing that is bad. We should stop them."
- You guys, "All police don't do that. You are an idiot."
That is a misleading way to avoid having to face the fact that some members of the police are doing those bad things. It's also a good way to make sure police aren't punished for doing those bad things. Why do you do that? For political gain.